| 东北地区春旱对春玉米幼苗长势的影响指标和模式 |
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| 引用本文： | 王琪,马树庆,徐丽萍,于海,张铁林.东北地区春旱对春玉米幼苗长势的影响指标和模式[J].自然灾害学报,2011(5). |
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| 作者姓名： | 王琪 马树庆 徐丽萍 于海 张铁林 |
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| 作者单位： | 吉林省气象研究所;吉林省气象台;榆树市农业气象试验站; |
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| 基金项目： | 国家行业专项(GYHY20096021) |
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| 摘 要： | 春旱对春玉米幼苗长势影响田间试验分3个播种期(温度处理)和4个土壤水分胁迫处理。结果表明,在东北中部玉米主产区,玉米幼苗长势好坏主要取决于水分。玉米幼苗长势(叶龄、生物量和株高)与春季土壤湿度和土壤累积有效水量的关系模式均为二次函数。干旱胁迫降低玉米苗期生叶速度和植株高度,减轻生物量,严重抑制幼苗营养生长。玉米春旱的指标是:W在18%～19%之间,或H在45～54mm之间为轻旱;17%～18%或40～45mm为中旱;17%以下或少于40mm为严重干旱。
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| 关 键 词： | 春玉米 春旱 水分胁迫 幼苗长势 指标和模式 |
Indices and modes of spring drought influence on maize seedling growth in northeast China |
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| WANG Qi,MA Shu-qing,XU Li-ping,YU Hai,ZHANG Tie-lin.Indices and modes of spring drought influence on maize seedling growth in northeast China[J].Journal of Natural Disasters,2011(5). |
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| Authors: | WANG Qi MA Shu-qing XU Li-ping YU Hai ZHANG Tie-lin |
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| Institution: | WANG Qi1,MA Shu-qing2,XU Li-ping3,YU Hai3,ZHANG Tie-lin3(1.Institute of Meteorological Science of Jilin Province,Changchun 130062,China,2.Meteorological Observatory of Jilin Province,3.Agrometeorological Observatory of Yushu County of Jilin Province,Yushu 131106,China) |
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| Abstract: | A field test was carried out for impact of spring drough on seedling growth of spring maize,test included three sowing periods(temperature treatment) and four soil water stress.The results show that in main maize growing areas of central northeast China,quality of seedling growth of maize depends on water.The relationship between the seedling growth of maize(leaf age,biomass and plant height) and spring soil moisture and cumulative effective soil water presents a quadratic function.Drought stress reduces th... |
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| Keywords: | spring maize spring drought soil moisture stress seedling growth indicator and model |
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